At the "Press Start Button" screen, hold Up/Right + X + Square, then press Start. Now enemy attack and defense power will be reduced by half, and more time will be available to complete each level.

Flight mode

Beat the game in less than 1:30:00. Then, hold L2 + R2 and press X on controller two. Now while playing the game, press R2 on controller one to climb, and L2 to dive.

Control map movement

Pause the game and enter the "Map" option. Then, press Select to stop the map movement. Now press L1, L2, R1, R2, and the D-pad to move around the map.

Level skip

Load a saved game and repeatedly tap Start until the save game message appears. Then, choose "No" to continue a game at the next level.

Extra options

Use a memory card and beat the game in less than 1:30:00. Then after the title screen appears again, press Start. Now choose the "Special" selection on the screen to access level selection, view FMV sequences, enter sound test mode, and other options.